2 years ago

A helicopter flies 238 miles in 3 hours 10 minutes. Calculate the average speed.

1 answer:

3 0

Speed equals distance over time, put hours into minutes which is 190 minutes divide that under 238 miles which gives an average of speed of 1.25m/s

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babunello [35]

Answer: 1.960

Step-by-step explanation:

The value of z we use to calculate a confidence interval with a ( $1-\alpha$ ) confidence level is a two-tailed test value i.e. represented by :-

$z_{\alpha/2}$

Given : The level of confidence: $1-\alpha=0.95$

Then, significance level : $\alpha: 1-0.95=0.05$

With the help of standard normal distribution table for z , we have

$z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.960$

Hence, the value of z should be used to calculate a confidence interval with a 95% confidence level =1.960

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3 years ago

NeX [460]

Answer: 12

Step-by-step explanation:

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2 years ago

Alik [6]

I got the one that truck was coming up and

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Nesterboy [21]

The measurement of x is 3.9999

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3 years ago

Kay [80]

Answer:

the answer is A please give me hearts and stars because it is correct.

Step-by-step explanation:

it is easy you just mark out the ones you know that is wrong and you are left with the answer a which is very correct.

4 0

3 years ago